Polystyrene block – chalking paint
Listed under: Exterior, finishes, plastic, paint, polystyrene, cladding, walls, wall cladding, polystyrene blocks
Cause
Weathering, UV light exposure – chalking will be more visible with darker colours
Repair
- thoroughly wash to remove chalking; sand and repaint applying a minimum two coats of semi-gloss or high gloss acrylic paint